The most common and most likely answer to this crossword clue is the 8 letter word FOOTNOTE
I've seen this crossword clue in The Times
F
O
O
T
N
O
T
E
More clues leading to the result FOOTNOTE
- Further comment, often too complicated
- Minor reference often wrong besides being raised internally
- It’s not very important to pay bill
- Additional information that an organist might provide
- Additional comment that the organist makes
- Book subscription too often renewed
- Minor detail is often too convoluted
- Textual comment often too cryptic
- Podiatrist’s comment?
Buddy explains!

The straight part
We know that "Further comment" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case further comment = footnote.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FOOTNOTE mean?
FOOTNOTE noun- A short piece of text, often numbered, placed at the bottom of a printed page, that adds a comment, citation, reference etc, to a designated part of the main text.
- (by extension) An event of lesser importance than some larger event to which it is related.
- A qualification to the import of something.
- To add footnotes to a text.